Turbine.



E. SCHLUMPF.

TURBINE.-

APPLICATION men ran. 12. 1915.

Patented June 22, 1915.

EDWIN SCHLUMPF, or ZURICH, SWITZERLAND, nssrenon. 'ro FIRM: AKTIENGESELL- sonar'r mm MASCHINENFABBIKEN ESCHER WYSS & 0111., or ZURICH, SWITZER- LAND.

TURBINE.

Specification of Letters Patent.

Patented June 22, 1915..

Application filed February 12, 1915. Serial No. 7,702.

ed new and useful Improvements in Steam and Gas Turbines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which'it appertains to make and use the same, reference being had to the accompanying drawing, and to letters or figures of reference marked thereon, which forms a part of this specification.

This invention relates to improvements in distributing or guiding devices for multichamber steamand gas-turbines of the kind having in each pressure stage a rotor wheel with several rows of moving blades.

According to an embodiment of this invention the-reversing blades of a pressure stage arranged between the. moving blade rimsof the rotor wheel of the-same pressure stage are carried by an annular prolongation provided on the immediately following 'uide ring.

One i orm of carrying the invention into effect is illustrated by way of example in the accompanying drawing showing in a partial longitudinal section the different blades of an action or impulse turbine.

Each of the rotor wheels 1, 2 and 3 has tgree rims of moving blades 5, 6, 7, 8, 9, 10 a d 11, 12,- 13 respectively. Between these moving blades there are dis osed the reversing blades 14' and 15, 16-, 1 and 18, 19- respectively. The reversing blades 14 and 15 are inserted into annular grooves of a supporting ring 20, formed integral withthe guide ring 21 of the following pressure stage. The reversing blades 16 and 17 of the immediately following pressure stage are similarly fixed to an annular prolongation 22' of the guide ring 23, which directs the steam toward the immediately following moving blades 11, 12, 13 of the wheel 3. The rings supporting the reversing blades are always arranged in front of the immediately following guide ring. Owing to this arrangement. it 1s possible to machmein a very accurate manner the outlet-front side of the guide rings, viz. the surface wcb of the ring 21 and the surface cd of the ring 23 as well as the channels of the guide rings 21 and 23, particularly near their outlet.

The guide rings 21 and 23 form with their,

corresponding annular prolongation 20' and 22, respectively, such a light and simple cast iron piece, that it may be easily machinedon any faceor chuck-lathe. If desired, all rings may be machined simultaneously on separate machines and after they have been provided with their may be built-in into the casing 24. The rigid connection existing between the supporting ring 20 and the guide ring 21 and between the supporting ring 22 and the guide ring 23 imparts a greater rigidity to blades they I said rings 20 and 22 which prevents moreover a deformation of-these rings during their machining and the insertion of the blades. Besides, no lathe-chucks and similar tools hitherto used for machining such single supporting rings have to be used. Finally,*I wish to point out that this invention may also be applied to turbines having rotor wheels provided with only two or more than three rims of moving blades instead of only three, as is the case in the em bodiment of the invention shown in the drawing.v I

I claim: I v

In a distributing or guiding device for multi-chamber steamand gas-turbines, a rotor wheel foreach pressure stage, several rows of moving blades on'each of said rotor wheels, rows of reversing blades in each pressure-stage arranged between the moving blades of said stage, and a guide ring for each pressure-stage provided with an annular prolongation formed inte 'al therewith and carryin the reversing lades arranged between t e moving blades of the immediately precedin rotor wheel.

In testimony that claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

EDWIN SOHLUMPF. 

